The Role of Crystallographic Texture and Basal Plane Slip on Microstructurally Short Fatigue Crack Initiation and Propagation in Forged Billet and Rolled Bar Ti-6Al-4V Alloy

Habib, Kishan; Nishikawa, Hideaki; Furuya, Yasubumi; Emura, Satoshi

doi:10.1007/s11661-021-06344-z

Cited by 14 publications

(3 citation statements)

References 37 publications

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“…To create a map of the crystal grains that can be fatigue crack initiation sites, it is necessary to determine the threshold value of SFsin that is effective for fatigue crack nucleation. Three crystal grains (grains 1-3) in which fatigue crack initiation sites obtained were investigated using SFsin in addition to the results of a previous report [9], in which eight crystal grains (grains [4][5][6][7][8][9][10][11] where the fatigue crack initiation sites were found, for a total of 11 crystal grains.…”

Section: Mapping Sfsin Values By Using Ebsd Resultsmentioning

confidence: 99%

“…For example, K. Habib et al investigated the fatigue crack initiation and propagation of Ti–6Al–4V alloy by using SF parameter, DIC analysis system and EBSD analysis. According to this report, it was clarified that the fatigue crack initiated along the prismatic slip plane and propagated along the varied orientation of the slip system [8].…”

Section: Introductionmentioning

confidence: 99%

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An evaluation of fatigue crack initiation in Ti–6Al–4V alloy by Schmid factor

Arakawa

Sato

Handa

et al. 2023

Materials Science and Technology

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A plane bending fatigue test was conducted on Ti–6Al–4V, and the crystal grains where the fatigue crack initiated were identified from the crystal orientation map obtained by using the EBSD method. In addition, the slip system, which generated the fatigue crack initiation, was identified by calculating the out-of-plane component of the Schmid factor ( SF) of each slip system. As a result, fatigue cracks were found to occur owing to basal slip. In this study, the out-of-plane component of the SF was mapped by considering the effect of the crystal grain size. The results clarified that the number of crystal grains where fatigue crack may initiate can be limited by using the out-of-plane component of the SF and the grain size.

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Section: Mapping Sfsin Values By Using Ebsd Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An evaluation of fatigue crack initiation in Ti–6Al–4V alloy by Schmid factor

Arakawa

Sato

Handa

et al. 2023

Materials Science and Technology

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“…A comparison of the test results for axial loading and rotary bending shows a higher scatter of results for the latter. A higher scatter of results under rotary bending can be explained by the effect of material structure non-uniformity, defect distribution [ 9 , 10 , 11 , 12 , 13 ], and non-uniform loading of the cross-section. Furthermore, under higher stress amplitudes, rotating-bending specimens generally exhibited better fatigue resistance as compared to the axial specimens subjected to the same nominal stresses.…”

Section: Introductionmentioning

confidence: 99%

A Novel Model of Ultrasonic Fatigue Test in Pure Bending

Yang

Tang

et al. 2022

Materials

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The very high cycle fatigue (VHCF) failure of in-service components is mainly caused by the vibration of thin-wall elements at a high frequency. In this work, a novel model of ultrasonic fatigue test was developed to test thin-wall material in bending up to VHCF with an accelerated frequency. The theoretical principle and finite element analysis were introduced for designing a sample that resonated at the frequency of 20 kHz in flexural vibration. In the advantage of the second-order flexural vibration, the gauge section of the sample was in the pure bending condition which prevented the intricate stress condition for thin-wall material as in the root of cantilever or the contact point of three points bending. Moreover, combining the constraint and the loading contact in one small section significantly reduced heating that originated from the friction at an ultrasonic frequency. Both strain gauge and deflection angle methods were applied to verify the controlling of stress amplitude. The fractography observation on Ti6Al4V samples indicated that the characterized fracture obtained from the novel model was the same as that from the conventional bending test.

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Influences of microstructures and macrozones on the stress corrosion cracking sensitivity of a near alpha titanium alloy

Xu,

Zhang,

et al. 2024

Corrosion Science

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The Role of Crystallographic Texture and Basal Plane Slip on Microstructurally Short Fatigue Crack Initiation and Propagation in Forged Billet and Rolled Bar Ti-6Al-4V Alloy

Cited by 14 publications

References 37 publications

An evaluation of fatigue crack initiation in Ti–6Al–4V alloy by Schmid factor

An evaluation of fatigue crack initiation in Ti–6Al–4V alloy by Schmid factor

A Novel Model of Ultrasonic Fatigue Test in Pure Bending

Influences of microstructures and macrozones on the stress corrosion cracking sensitivity of a near alpha titanium alloy

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